Key.



PATENTBD MAY 10, 1904.

I M- Amm DKN W N0. 759,503. PATENTED MAY 10, 1904.

G. W. DARLING.

KEY.

APPLICATION FILED DEO.15. 1903. 4

N0 MODEL. 2 SHEETS--SHEET-2.

UNITED STATES Patented May 1o, 1904.

GEORGE W. DARLING, OF-MARSHALLTOWN, IOWA;

` KEY.

SPECIFICATION forming part of Letters Patent N0. 759,503, dated May 10, 1904.

Application ledDecember 15, 1903. Serial No. 185.238. (No model.) l

To n/ZZ wto'mfit may concern: Y

Be it known that I, Geenen W. 'DARLiNm a citizen of the United States of America, and a resident of Marshalltown, Marshall county, Iowa, have invented a new and useful Key, of which the following` is a speciiication.

The object of this invention is to provide improved means for retaining` a key in its seat.

A further object of this invention is to provide means for tightening a key in its seat and at the same time cause said key to bind against and tighten another device.

My invention consists in the construction, arrangement, and combination of elements hereinafter set forth, pointed out in my claims, and illustrated by the accompanying drawings, in which- Figure 1 is a perspective illustrating the application of my improved key to a bolt or pin. Fig. 2 is a cross-section illustrating the application of my improved key and pin to the fastening of fish-plates to a railway-rail.

Fig. 3 is a horizontal section illustrating the same devices that are shown in Fig. 2. Fig. t is an end elevation of the completed device in position for use. Fig. 5 is a perspective showing the device in position for insertion in a bolt or pin. Figs. 6, 7, 8, 9, 10, and 11 are detail side elevations of various modifications of keys and key-fasteners in relation to bolts or pins.

In the construction of the device and its use as illustrated the numeral designates a railway-rail having fish-plates 11 12 mounted 3 5 on opposite sides of its web portion and a pin than the greatest transverse dimension of the stem of the key in order that said key may be driven through said slot and draw the pin 13 and press upon the [ish-plate 12, thus firmly binding the fish-platcs to theweb of the track-rail 1O` An o'set, ear, or projecf tion 16 is formed `on and extends laterally from the larger end portion of the key 15, and said ear is provided with an aperture in a plane parallel `with the trend of the key. The ear 16 is set in from the end of` the key 15 to forni a shoulder 17, and an aperture 18 is formed in the pin or bolt 13 parallel with the slot 1li and nearer to the extremity or outer end of said pin or bolt. cotter 19 is mounted in the aperture of the ear 16 and extends through the aperture 18 of the pin or bolt 13 and has its end portions bent in opposite directions from said pin. When the key 15 has been driven to the desired extent through the slot 14:, the split key or cotter 19 is mounted through the apertures provided therefor, and the end portions thereof are bent around and in opposite directions relative to the pin or bolt 13. The laterally-bent end portions of the split key or cotter 19 prevent the withdrawal of the cotter -from the pin or bolt 13, and the head of said cotter engaging the outer faceI of the ear 16 prevents the withdrawal of the key 15 from said pin or bolt.

Through the use of the key of tapering formation I am enabled to draw the pin 13 tightly to its seat and force the fish-plate 12 or other device tightly to its seat, and in the provision of the split key or cotter 19, hav` ing arms susceptible of bending at any point in their lengths, I am enabled to retain the tapering key 15 in its seat at any desired point.

In Fig. 6 I show the key without the aperture in its ear or projection and the cotter as a single piece 20, with a head 21 riveted or otherwise fixed to the head of the key.

In Fig. 7 I show the key without the ear or projection and the cotter 22 formed as a single piece, with a head 23 riveted or otherwise fixed to the head of the key.

1n Fig. 8 I show the key Without the ear or projection, but formed With a notch in its head end arranged to receive a head 24 ofa cotter 25 loosely.

In Fig. 9 I show the key with an ear or pro- A split key or jeCtion arranged to be embraeed'by a loop 26 of a Cotter 27. n

In Fig. 10 I show the key formed with an ear flush with its outer end and apertured for the reception of a Cotter.

In Fig. 11 I show the key formed With an aperture transversely oi' its upper end portion to receive the head 28 of a single Cotter 29.

Although I illustrate the device in some views in Connection With railway-rails and ish-plates, I Wish to be understood as Centernplating a Wider range of use for it, such as in machinery of various kinds.

I Claim as my invention l. The Combination of a pin or bolt formed with a slot, a tapering key mounted in said slot, said pin or bolt also formed with a hole, and a split key mounted through said tapering 'key and through the hole inthe pin or bolt and engaging said pin or bolt.

2. A key of tapering formation, a head on and extending laterally therefrom and apertnred and a split key mounted in the aperture of said head.

3. A tapering key formed With an ear laterally extending from its larger end portion and apertured parallel with the trend of the key, and a fastening-key mounted in the aperture of said ear.

4. A tapering key having an ear formed on and extending laterally from one end portion thereof, said ear set inward from the extremity of the key to form a shoulder and apertured parallel with a trend of the key, and a retaining-key mounted through the aperture of the ear and engaging said shoulder, Whereby said retaining-key is held against rotation when set in said ear.

Signed by me at Marshalltown, Marshall County, Iowa, this 27 th day of April, 1903.

GEORGE W. DARLING.

Witnesses:

G. W. LAWRENCE, W. H. HAMMOND. 

